00878nam a2200241Ia 450000100060000000300050000600500170001100800410002801000130006903500200008203700490010204000130015110000380016424500940020225000110029626000350030726500780034230000170042049000400043750000770047765000320055470000500058666547BIBL20180417022326.0800811r19801962miu      b    001 0 eng d  z62011648  a(OCoLC)06608351  a2012463bUniversity Microfilms International  aUMIcUMI10aAnderson, Vernon Ellsworth2Local10aPrinciples and practices of secondary educationcVernon E. Anderson and William T. Gruhn.  a2d ed.0 aNew YorkbRonald Presscc1962.  aUniversity Microfilms International, 300 N. Zeeb Rd., Ann Arbor, MI 48106  aviii, 513 p.0 aDouglass series in education2Local  aPhotocopy. Ann Arbor, Mich. : University Microfilms International, 1980. 0aEducation, Secondary2Local10aGruhn, William Theodoreejoint author.2Local